/*
 * Copyright (c) 2008-2009 Ravenhearte Design
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are
 * met:
 *
 * * Redistributions of source code must retain the above copyright
 *   notice, this list of conditions and the following disclaimer.
 *
 * * Redistributions in binary form must reproduce the above copyright
 *   notice, this list of conditions and the following disclaimer in the
 *   documentation and/or other materials provided with the distribution.
 *
 * * Neither the name of 'Ravenhearte Design' nor the names of its contributors 
 *   may be used to endorse or promote products derived from this software 
 *   without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

package org.ravenhearte.hardboild.gui;

import java.nio.FloatBuffer;
import java.util.HashMap;

import com.jme.math.Vector3f;
import com.jme.scene.TexCoords;
import com.jme.scene.state.RenderState;
import com.jme.scene.state.TextureState;
import com.jme.util.geom.BufferUtils;

public class ImageButton extends ImageElement implements Button {
	private HashMap<String, TexCoords> states;
	private boolean pressed;

	public ImageButton(String name, int width, int height) {
		super(name, width, height);
		states = new HashMap<String, TexCoords>();
	}
	
	@SuppressWarnings("deprecation")
	public void setState(String state, int x, int y) {
		
		final TextureState ts = (TextureState) getSpatial().getRenderState(RenderState.RS_TEXTURE);
		
		int textureWidth = ts.getTexture().getImage().getWidth();
        int textureHeight = ts.getTexture().getImage().getHeight();
        
		final FloatBuffer texCoords = BufferUtils.createVector2Buffer(4);
        
        texCoords.put((float)x / textureWidth).put(
        		1 - (float) y / textureHeight);
        
        texCoords.put((float)x / textureWidth).put(
        		1 - (float) (y + spatial.getHeight()) / textureHeight);
        
        texCoords.put((float)(x +  spatial.getWidth()) / textureWidth).put(
        		1 - (float) (y + spatial.getHeight()) / textureHeight);
        
        texCoords.put((float)(x +  spatial.getWidth()) / textureWidth).put(
        		1 - (float) y / textureHeight);
		
        states.put(state, new TexCoords(texCoords));
	}

	@Override
	public boolean contains(int x, int y) {
		Vector3f loc = spatial.getWorldTranslation();
		if ((x > loc.x - (spatial.getWidth() / 2)) && (x < loc.x + (spatial.getWidth() / 2))
		&& (y > loc.y - (spatial.getHeight() / 2)) && (y < loc.y + (spatial.getHeight() / 2))) {
			return true;
		}
		else {
			return false;
		}
	}

	@Override
	public boolean isPressed() {
		return pressed;
	}

	@Override
	public void onMouseOver() {
		spatial.setTextureCoords(states.get("MouseOver"));
		spatial.updateRenderState();
	}

	@Override
	public void onMouseOut() {
		spatial.setTextureCoords(states.get("MouseOut"));
		spatial.updateRenderState();	
	}

	@Override
	public void onMouseClick() {
		pressed = true;
		spatial.setTextureCoords(states.get("MouseClick"));
		spatial.updateRenderState();
	}

	@Override
	public void onMouseRelease() {
		pressed = false;
		spatial.setTextureCoords(states.get("MouseOver"));
		spatial.updateRenderState();
	}
}
